Expert as in rap To speak incessantly or incoherently, often revealing excessive or irrelevant information; similar to gibbering. Clear All
2 Example Sentences Showcasing the Meaning of 'Run Off At The Mouth'
The scientist, in his enthusiasm, would run off at the mouth about the potential breakthrough in renewable energy technology.
Despite being a seasoned diplomat, he occasionally would run off at the mouth, causing diplomatic tensions.
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